Apex domains cannot have CNAME records.
Question and response
Question
dig gyapi.net. NS
Answer
gyapi.net. 5 NS ns2.gyapi.net.
gyapi.net. 5 NS ns1.gyapi.net.
Authority
The response has no authority records.
Additional
ns1.gyapi.net. 5 A 194.180.16.16
ns2.gyapi.net. 5 A 46.29.142.124
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0